I am going to assume that you have Ubutnu 18.04 or 19.04 version installed your system and you want to install NetBeans 10/11.
Go ahead and launch terminal and run this command to update Ubuntu core..
sudo apt update && upgrade
Install NetBeans 11 on Ubutnu with snap command
sudo snap install netbeans --classic
This command is going to install java and java jre and netbeans 11 on your Ubuntu 18.04/19.04
Install NetBeans 10 on Ubuntu 18.04/19.04
sudo apt install netbeans
This command would work on legacy Ubutnu versions as well. And will install java, java jre and NetBeans 10
To launch NetBeans type in the terminal
If you still not able install netbeans on Ubuntu Linus destro, watch me install below…